HMC346MS8G / 346MS8GE
v07.1008
GaAs MMIC SMT VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz
5 Typical Applications This atte...
HMC346MS8G / 346MS8GE
v07.1008
GaAs MMIC SMT
VOLTAGE-VARIABLE ATTENUATOR, DC - 8 GHz
5 Typical Applications This attenuator is ideal for use as a VVA for DC - 8 GHz applications: Point-to-Point Radio VSAT Radio
Features
Wide Bandwidth: DC - 8 GHz Low Phase Shift vs. Attenuation 32 dB Attenuation Range
ATTENUATORS - SMT
Functional Diagram
General Description
The HMC346MS8G & HMC346MS8GE are absorptive
Voltage Variable Attenuators (VVA) in 8 lead surface-mount packages operating from DC - 8 GHz. It features an on-chip reference attenuator for use with an external op-amp to provide simple single
voltage attenuation control, 0 to -3V. The device is ideal in designs where an analog DC control signal must control RF signal levels over a 30 dB amplitude range. Applications include AGC circuits and temperature compensation of multiple gain stages in microwave point-to-point and VSAT radios.
Electrical Specifications, TA = +25° C, 50 ohm system
Parameter
Min
Typical
Max
Insertion Loss
DC - 8 GHz
1.5
2.5
Attenuation Range
DC - 8 GHz
27
32
Return Loss
DC - 8 GHz
5
10
Switching Characteristics
tRISE, tFALL (10/90% RF)
2
tON, tOFF (50% CTL to 10/90% RF)
8
Input Power for 0.25 dB Compression (0.5 - 8 GHz)
Min. Atten.
+8
Atten. >2 dB
-2
Input Third Order Intercept (0.5 - 8 GHz) (Two-tone Input Power = -8 dBm Each Tone)
Min. Atten.
+25
Atten. >2 dB
+10
Units dB dB dB ns ns dBm dBm dBm dBm
5 - 102
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